Two-wheel locomotive truck



Oct. 2s, 1930.

J. S. KEEN ET AL Two-WHEEL LocoMoTIvE TRUCK Filed March 28, 1930 3 ShetS-Sheet l l V Q @gr 2&7

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octfzs, 1930.

3 Sheets-Sheet 2 J S KEEN ET AL Twp-WHEEL LocoMoTIvE TRUCK Filed March 28 VOct. 28, 1930. J.' s. KEEN ET'AL 1,780,082

Two-WHEEL LocoMoTIvE TRUCK Filed march., 28, 1930 :sheets-sheet 3' lvlllrll/llllllll, v

' on the.outsidevoftlievvheels.-" This truck is y preferably supplied Withv-aradius bar to al- ,Y .flow it Lto accommodate ,itselfl to i :any curva.- l. tures inthe trackf Patented f Get; 28, 1939 rWo-W-Hnnnfnooomorrvn TRUCK 4Application yfiled.'11131101128, 1930. Serial 1101.439391.

i This invention relates to improvements in locomotive truolisof the twofwheel type, invvhich the bearings for the axleare j Oneobject of the invention l.istomakletlle f fra-me of .the truck as anV integral casting and. to provide outside bearing members for thejourn'al boxes of the struck, as `Wellfzas to provide inside longitudinal members kfrom which are suspendedthe springs whichr support thejenter pin;

Another-,object oit the inventiony isl to rmale .;..i1emeea=frmeespande@ihm- 'dius bar, vvliiohis .secured thereto4 by bolts l Oreillerfasteninss f f Theinvention alsowrelates toeertainfde- ,H5`Fig. f3 isan end view'ofthetruck; [L

fthe truck, ,on ultime* rig'. `fiaiuu'sf l gitratingithe construetionofgthe axle'boxy.

tails i which Vvvill be described..y hereinafter;

i In the accompanying.drawings:y r Y.

Fig.' 1 is a. plan view Ofthefmprovedlbin section.; y

. Fig.V 'isasectional view ofonesidefof Fig'. 5 is a'sectionalviejw/on thelline'-fk,

Medisana m a6 there? Fig Slis anlviewfillustrating a modifica- A `tion,V inV which the' radiusfbar A is made Yinf ftegral with* the 'tru'ckgv and l Figs.` 9,710,V 114 and i127* are'Y :illustrat- Ving otherfiorms of ,axleboxesm Referring to. Figs. 1, 2 and.3 .the

metal lframe 1 `of the/trnckgextendsbeyond fthe Wheelbaseotthetruck, andfconsists yof il sidejby,innemend/router,sidemembers 3 andl two transverse members 17 connectedat each 12, spaced 'apart .tofallovv .for the, Wheels ,4,

f, which are mountedonthe" axle 5. *Theout- .si-deg membersare preferably; roundedfatr each `Whichtvv'o bearing sleeves lSand 14 areused;

' Y Figi@ is aside viewshoiving 6 for the axle boxes `'7, into ,Which extendl'l' .the ends of the axles 5.

The'axle boxes shown inFigs.2 and-4 are rectangular in cross-section,` as shown in 2 and have brasses 8 which rest upon the axles.

, V55 The lboxes are conlined between. the' pedestals 6 and areheld against the bridge portion `9 ofthe side members 2 by boltslO, l

which extend through, lugs l1 rdepending i60 mounted on the bolts 10 andrest against the underside of the boxes. y Other types of boxes from theside members 2., Sleeves l2 are maybe used in place ofthe boxes shown in v Fig.,2 if desired. Foruinstanc'e,fthejboxes shown in Figs. 9 'andlO may be usedin theouter Usleeve 18. being secured to the box and the inner sleeve llbei'ng located between i the outer v sleeve vand the axleandfreeto revolve onf'the axle and in theoute'r sleeve. In ljligs),V 10, 11 yand-.12a radial -seat` pieceis shownlocatedbetweenzthebridge portion of each side member 2 `and the top of theV box toftale care of any slight vertical y I misalignment of the journal bearings. This construction maybe applied to -the box shown in Fig. 2 if oundnecessary.`

In Figs. 11 and 12 lanother 'form oboxis y shown which' may be'used with the ,i'm-

proved frame. Inthis box are roller-beari ings 16 of any suitable type.v ,Y .l

The transverse mmbersl of theyframe 3 substantial, and as these members 'are l integral with the rame, the entire frame isz.

u are made hollow as shown in Fig. 5,` andthe inner klongitudinal members 3.-'3 extend from one side member 17 to thefother side member 17 ofthe frame 1 as supports ortlle' n swing-linkblooks. These members have verj tical ribs 18 at eachside, making thermeniber vvery rigid. In the members 3`areslotsl9 for the spring-links of the truck. These slotsare arranged in pairs on-eaoh side ofthev transverse centerline of the truck, and vbetween eachpa'ir of slots is a bearing-block 2O having araised center portion 2l. 22 are rlinks i' which yextend through ,the slots, 19,' 1 and `the links `oiea-ch pair are connected by two boltsv El l Qat their upper ends and are adaptedto the blocks 2O ,0n feaoli sidefof. the proj ectionf21.

On these bolts are sleeves 23 in the present instance. Connecting the lower ends of each pair of links yis a bolt 24: carrying a .spring rseat 25. The ends of the semi-elllptical springs 26 rest upon these spring seats. They links are of the well-known 3-point suspension type and permit the truck to adj ust itself to the curvature of the track in the usual manner These springs 26 are transverselyI arranged "and are hung from the two longllV 20 ed head on which rests the end of an equalizin bar 33. 4 y ,Y

n Figs. 1 and-2 the radius bar 34 ismade separate and adapted to brackets project- Ving from the integral frame 1 by bolts kor other suitable fastenings.' The two members 37 of the radius bar terminate in a head 38, in which is an opening 39 for the pivot pin, on which the truck swings.

, Fig. 8 is a modification, in which the radius bar 34 is made integral with the frame l".

While the three-point suspension links are preferred, the links could be of the singleypoint suspension type without departing vfrom the essential features of thelinvention.

'We claim: l. 1. A frame for a two-wheel locomotive truckmade in asingle casting and consisting y A members; transversely .arranged .semi-ellipfof` two transverse meinbers,'side members side of the frame and spaced apart for they Afwheels of the truck, the` inside longitudinal members beingy slotted for the passage of spring-suspending links. Y

2. The combination in a two-wheel locoymotive truck, of an integral frame consisting y .foi two transverse members, end .members rojectingbeyond the wheel basa-and two bases, said members being slotted; links hung from said members and extending through ythe slots; transverse semi-elliptical;springs .of the frame; kand an axle box mounted in,

. the outer side members of the frame.

` 3. The combination in a two-wheel truck' `fora locomotive, of an integral frame, conslsting oftwotransverse members, an outer y, side member land an inner side member at .eachA slde of the frame, .said members being spaced apart; an axle; boxes on the outer` .members of the frame for the axle; wheels on the axle located in the space between the inner and outer members of the frame; blocks mounted on the inner members on each side of the transverse center pin of the truck; slots in the said members on each side of the blocks; links hung from the blocks; transversely arranged semi-elliptic springs'supported bythe links; and aV bolster mounted on the springs at the center of the truck, said bolster carrying a center pin. n ,f

4. vTh'e'combination in a twowheel truck for a locomotive, of an integral frame, consisting of two transverse members, an outer side member and an inner side member at each sideof the frame, said members being spaced apart; an axle, boxes on the outer member of the frame for the axle; wheels on the axle located in the space between the inner and outer members of the frame; blocks mountedvon theinner members on each side of they transversecenter pin of the truck; slots in the said members on each side of the blocks; links hung Afrom the` blocks; transversely arranged semi-elliptic springs carried by the links and a bolster mounted on the springs at the center of the truck, said bolster carrying a nter pin, the framel having brackets *spaced apart and a radius bar secured to the brackets.

y, 5. The combination in a two-wheel locomotive truck, of a frame having two trans' verse members, anoutside side member at 'each side of the frame and an vinside side member ateaeh side of the frame, said memin the boxes; wheels' on the axle located in the space between the inner and outer side tic springs hung from the inner side mem-.ypV

bers; a bolster restingupon the springs and Vhaving a pivot pin projecting therefrom, the said bolster havin depending portions extending between t e springs; and a safety guard plate secured to the said extending under the springs.

6. An integral frame for a truckhaving two transverse members spaced apart, inner vside members extending from one transverse f ongitudinal members between the wheel portions and ,y

"los

member to the other rand yconnecting said transverse members, said inner side members having upstanding lianges; and outside side members spaced from the inside members and havingA pedestals for the boxes for the axles of 'thel truck, the inside members beingslotted forthe passagev of suspension links for the springs. Y

y 7. integral frame for a truck. having two ytransverse members spaced apart,'said membersbeing rectangular in cross-section and hollow; inner side membersextending from one transverse member to the other and connecting said transverse members, said inner side members having upstan'ding flanges andoutside side members spaced from the lll inside members and having pedestals for the boxes for the axles of the truck, the inside members `being slottedv for ythe passage of suspension links for the springs.

8. The combination in a two-wheel swing truck for locomotives and the like, of an integral frame consisting of two transverse members spaced apart, and outside side mem- Y bers connected to the transverse members, the outsideY side .members being curved at each end ,andv havingV pedestals; Vintegral i flanged inside members spaced from the outside members; said inside members having slots therein arranged in pairs; an axle having wheels located in the space between the inner and outer side fra-mes; axle boxes located betweenpedestals of the outer frames 5` a block mountedon each inner frame between eachy set` of slots three-point suspensionlinks hung from the blocks and extending through n f the slots ofthe inside side members transverse' springs carried by the links; a bolster mounts ed on the springs and having a pivot pin projecting upwardly therefrom; and a radius bar projecting from the truck.`

' JOHN S. KEEN.' ELLWOOD M. SHANNON. 

